3.2.5 Aspect Ratio and Scale Mode
The aspect ratio of any picture is its height divided by its width. H / W = Aspect Ratio
The native aspect ratio of the Bay Cat X screen is 1.77, which is sometimes referred to as 16:9. This is the WXGA and HDTV picture format.
1366 horizontal pixels, 768 vertical pixels
1366 / 768 = 1.77
Many pictures do not have this aspect ratio. Standard television, VGA, SVGA, and XGA signals are 1.33. Mov- ies from DVDs vary depending on the original film format, often 1.85. The larger the number, the “wider” the picture seems.
When the incoming picture is a different aspect ratio
from the screen, Bay Cat X gives you six choices to make it fit. To select the scaling mode, go to Main Menu > Aspect Ratio & Wall > Scale Mode.
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Main Menu
Picture
Size & Position
Aspect Ratio & Wall
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Diagnostics
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| Scale Mode |
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The six Scale Modes are “radio” buttons; you can only choose one.)
Fill All
Crop
Letterbox/Pillarbox
Widescreen (16x9)
Normal Video (4x3)
One to One
✎The Scale Mode menu icons change to indicate the effect each mode will have on the picture based on the Justify and Scale Mode settings, and the source resolution.
Fill All makes the picture fit
Letterbox/Pillarbox expands the picture until the first edges
Crop expands the picture until the second edges touch the border and let the other edges of the picture fall outside the display and get cropped.
Widescreen (16x9) forces the aspect ratio to 16 x 9 (1.77), the standard for many DVD movies. This will distort any picture other than 16X9 aspect ratio pictures. Widescreen can be used to display anamorphic DVDs on an array.
Normal Video (4x3) forces a 4 x 3 (1.33) aspect ratio, the ratio of standard television. Normal Video is used to dis- play YPbPr video on the analog input port. Its resolution is 720x640 which is not 4x3 but it should be displayed as 4x3 (the pixels aren't square).
One to One maintains the original size and aspect ratio of the picture. This may leave blank areas on all four sides. For instance, a VGA picture (640 × 480) will occupy only a small area in the center of the screen. For UXGA sources, this will crop the picture top and bottom.
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